Stairmaster 8G Gauntlet User manual

OWNER’S
MANUAL
CORE HEALTH & FITNESS
8G

Page 1
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS................................................................................................................2
PRODUCT SPECIFICATIONS ........................................................................................................................4
IMPORTANT LABEL LOCATIONS ........................................................................................................................5
PART IDENTIFICATION ........................................................................................................................6
OPERATION - OPENHUB
LCD CONSOLES ........................................................................................................................7
PROGRAM PROFILES ................................................................. 11
OPERATION - OPENHUB
TOUCHSCREEN CONSOLES ......................................................................................................................12
SCREEN VIEWS ................................................................. 14
WORKOUT SELECTION KEYS AND PROGRAM DEFINITIONS.................. 16
PROGRAM UPLOAD ................................................................. 17
8G/10G MENU MAP ................................................................. 19
MAINTENANCE MODE - LCD ......................................................................................................................20
MAINTENANCE ......................................................................................................................23
TOOLS ................................................................. 23
MAINTENANCE SCHEDULE ................................................................. 24
SUPPORT & SERVICE ......................................................................................................................25
SCAN FOR INSTALL VIDEO

Page 2
Before using this product, it is essential to read the ENTIRE Owner’s Manual and ALL
installation instructions. The Owner’s Manual describes equipment setup and instructs
members on how to use correctly and safely.
Read all warnings posted on the machine.
Health related injuries may result from incorrect or excessive use of exercise equipment.
Core Health & Fitness strongly recommends you to encourage your members to discuss their
health program or fitness regimen with a health care professional, especially if you or they
have not exercised for several years, are over 35, or have known health conditions.
WARNING!
IMPORTANT SAFETY INSTRUCTIONS
DANGER - to reduce the risk of electrical
shock:
1. Always unplug the machine from the electrical
outlet before cleaning or servicing.
2. This product is factory-equipped with a specific
DC Power Supply to permit connection to the
proper electric circuit. Make sure that the product
is connected to a dedicated power line having an
outlet with the same configuration as that of the
plug.
3. Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
Check with a qualified electrician or serviceman
if you are in doubt as to whether the product
is properly grounded. Do not modify the plug
provided with the product. NO adapter should
be used with this product. If the product must
be reconnected for use on a different type of
electric circuit, the reconnection should be made
by qualified service personnel in order to avoid a
hazard.
4. This machine is not intended to be serviced by
the end user, refer servicing to qualified personnel
only.
5. If the power supply cord is damaged, it must be
replaced by the manufacturer, its service agent,
or similarly qualified persons in order to avoid
hazard.
6. Keep the cord away from heated surfaces.
Unplug power cord when the machine is
unattended and before performing any
preventative maintenance such as cleaning or
replacing a worn part.
7. Do not operate unit in damp or wet locations.
WARNING - to reduce the risk of injury to
person:
24 in (0.6 m)
48 in (1.25 m)
Fig. 1 Required Clearance
1. Assemble and operate the machine on a solid
level surface. Position the machine with a
minimum of 48 inches (1.25 meters) of clearance
to allow for ease of mounting and dismounting.
Allow for 24 inches (0.6 meters) of clearance
behind the machine. A ceiling height of 10’ (3.0
meters) is recommended to accommodate most
users. These dimensions are the recommended
minimum distances.
The actual area for access and passage shall be
the responsibility of the facility and should take
into account this training envelope, Americans
with Disabilities Act Accessibility Guidelines
(ADAAG) requirements and any required local
codes or regulations (www.access-board.gov/
ada).

Page 3
2. Users under 80 lbs (36 kg) will result in equipment
not functioning as intended.
3. Do not exceed the maximum allowable weight
limit of:
• 8G - 350 lbs. / 158 kg.
4. This equipment is designed for use in a
commercial gymnasium or health club. To ensure
the proper use of the equipment in a safe manner,
all users of the equipment should read this
manual before using the machine. This machine
should be made a part of your club training
program in order that the equipment is used by
your members in a safe manner as intended. In
addition to instructing the club members in the
proper use of the equipment, the club member
should obtain a complete physical examination
form their health care provider before beginning
any exercise program.
5. This machine is not intended to be used by
persons with reduced physical, sensory, or
mental capabilities or lack of experience and
knowledge, unless given instruction and under
the personal supervision concerning use of the
machine by a person responsible for their safety.
6. Keep children away.
7. Familiarize yourself with the location of the STOP
buttons on the console and right handrail. If
you experience difficulties during the workout,
pushing the STOP button will bring the machine
to a stop.
8. Use care when getting on or off the machine.
Always use the handrails. Do not step off of
the machine while it is moving. Press the STOP
button and wait for the machine to come to a
complete stop before dismounting.
9. Wear proper exercise clothing and athletic shoes
during a workout. Avoid wearing loose clothing.
Tie back long hair and keep towels away from
the moving parts. Face forward at all times and
never attempt to turn around while the machine is
moving.
10. Do not operate the machine if the shrouds are
removed or if the power cord is damaged in any
manner. Keep all air openings free from dirt or
any material that would block the flow of air to the
motor.
11. The safety and integrity of this machine can only
be maintained when the equipment is regularly
examined for damage and wear and repaired.
It is the sole responsibility of the owner of this
equipment to ensure that regular maintenance
is performed. Worn or damaged parts must be
replaced immediately or the equipment removed
from service until the repair is made.
12. WARNING: Heart rate monitoring systems
may be inaccurate. Over-exercising may result
in serious injury or death. If you feel faint stop
exercising immediately.
13. Noise emission under load is higher than without
load.
SAVE THESE INSTRUCTIONS

Page 4
Fig. 2
SKU: 9-5270 Desc: 8G
Unit Weight Width Length Height Max User Weight
370 lbs
167.5 kg
34.5 in
87 cm
59.5 in
151 cm
88.6 in
225 cm
80 - 350 lbs
36 - 158 kg
PRODUCT SPECIFICATIONS

Page 5
IMPORTANT LABEL LOCATIONS
050-2215 B
READ THE OWNERS MANUAL
AND FOLLOW ALL PROPER
INSTRUCTIONS PRIOR TO USE.
IMPROPER USE OF THIS MACHINE
CAN RESULT IN SERIOUS INJURY.
1. As with all exercise equipment
or programs, consult a physician
prior to use and stop if you feel
faint, dizzy or exhausted.
2. This equipment should only be
used in a supervised environment.
3. Inspect machine prior to use and
immediately report worn, loose or
damaged equipment to the
responsible party and refrain from
using it.
4. Always exercise in control. Begin
exercising carefully as steps and/or
pedals will begin to move once
contacted.
5. Keep body and clothing free and
clear of all moving parts.
6. Always wear closed toe athletic
shoes when operating this machine.
7. Keep children away.
8. Replace this label if damaged or
illegible.
P/N: 050-2198 REV B
MAX USER
WEIGHT
CERTIFICATIONS
MFG
DATE
VOLT
AMPS
CYCLES WATTS
PHASE
Patents:
Core Health & Fitness, LLC
4400 NE 77th Avenue, Suite 300
Vancouver, WA 98662 USA
1-888-678-2476
P/N: 050-5456 Rev A
Class SA Fitness Equipment
for comercial use only
DESIGNED IN THE USA
MADE IN CHINA
www.corehealthandfitness.com/patents

Page 6
D
C
E
B
F
H
A
I
G
Fig. 3 8G Features
PART IDENTIFICATION
# Part # Part # Part
AConsole ETransport Wheel ISTOP Button
BShrouds / Housing FStair
CMain Frame GHandrail
DLeveling Foot HHeart Rate Grips

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DISPLAY MEASUREMENTS
SPEED Displays the current speed in Steps per Minute
LEVEL Displays the current level, from 1-25
KCAL Displays accumulated calories burned
WATTS/METS Alternates display of current user Watts and METS
WORKOUT PROFILE Displays profile of past and upcoming speed levels relative to one another
SEGMENT TIMER Below the Workout Profile area is a segment timer that counts down the time remaining
in the current segment.
TOP DISPLAY WINDOW
The top display window includes several measures:
TIME Current total workout time
FLOORS Current total number of floors climbed
STEPS Current total number of steps climbed
HEART RATE Current HR in beats per minute,
if available
CONSOLE KEY FUNCTIONS
QUICK START
Key
Enables manual operation using a default weight, SPEED and a default time limit.
NOTE: Default time and weight are adjustable through Maintenance Mode.
STOP Button
Press the STOP button to enter pause mode. Workout will be suspended and a countdown
timer will begin counting down from 2 minutes. To re-start workout press the Key. To
end the workout push the STOP button again
OPERATION - OPENHUB
LCD CONSOLES

Page 8
Fan Button Cycles the fan between three settings: High, Low and Off
Numeric
Keypad
Use to enter specific values for program parameters during program setup.
During a program, these keys may be used to change level.
Up/Down
Buttons Cycle between options during setup mode, adjust level up and down during workout mode
FUNCTION NOTE: This machine has a safety feature to help prevent users from accidentally increasing the
machine speed to a level that is too high for them. When pressing the level up button to increase speed, there
are two stop points at level 10 and level 15 which function as follows: when increasing level, the machine will
not allow the user to increase the level past the stop point until the actual machine speed has reached the set
level. For example, if a user is at level 5 and repeatedly pressed the level up button, it will allow the set level to
go up to level 10, but no further until the actual machine speed has reached level 10. Once the machine speed
has reached the set level, the user can increase the level further.
BLUETOOTH DEVICE PAIRING
Bluetooth Device Pairing with Bluetooth Button: Pushing the button puts the console into
discover mode. The console will be available for pairing for up to 60 seconds to pair with a
compatible App. The button will flash while searching for pairing, and the display will show the
unique console code. Once a device is paired with the console, the light will stop flashing and
remain on to indicate the connection. Visit our website for a list of compatible Apps.
Pairing with Apple Watch: OpenHub consoles marked with this icon have the
capability to connect using Near Field Communication (NFC) with Apple Watch (must be
running WatchOS 4.2 or later and have option Detect Gym Equipment set to On in Watch settings for
Workout App.)
Pairing with Samsung Galaxy Watch: OpenHub consoles marked with the Samsung
icon also have the capability to connect with Samsung Galaxy Watch (must be running
software 4.8 or later and have NFC set to On)1.
To connect: Hold the watch near the icon on the console (this is where the NFC reader is located). When
the display and watch detect each other, the Bluetooth button on the display will flash and then turn solid blue,
and watch will ask user to confirm connection with the display. Once connection is confirmed by user, it will
finalize and data will begin to pass between console and watch. It is possible to make this connection either
before the workout begins (recommended), or at any time during an active workout. At the end of workout, the
connection will be terminated.
Note: when Apple Watch is connected to display, the Calories display window will show both Active and Total
Calories per Apple Watch calculations.
1 See support.corehandf.com/Software for version numbers and update instructions

Page 9
WORKOUT SELECTION KEYS AND PROGRAM DEFINITIONS
GOAL BASED PROGRAMS
When a goal based program is selected, user will then have the option to select from a list of program profiles,
see PROGRAM PROFILES section for details on the profile options
Time Goal Allows entry of a set workout time goal
Calorie Goal Allows entry of a set number of calories to burn during workout
Distance Goal Allows entry of a set number floors to climb during workout (1 Floor = 16 Steps)
CONSOLE KEY FUNCTIONS
Manual Similar to Quick Start, but allows user to enter a time goal and weight for more
accurate calorie measurement
Landmark
Challenge Choose from 1 of 14 different famous buildings to climb
Training Tools Access to HR Zone Trainer
CPAT: Candidate Physical Aptitude Test, used to test firefighters in the United States. Consists of a 20 second
warm up phase at 50 steps/minute, followed by a 3 minute test phase at 60 steps/minute.
HR ZONE TRAINER: Program requires telemetry HR belt. User will be asked to select a Target Heart Rate
(THR). Once the workout begins, the machine will slowly increase effort level to bring user into the range of
THR, and will adjust resistance automatically to keep user HR in that range. To choose a different THR at any
time during the workout, use the numeric keypad to enter the new THR (between 50-190 beats/minute)

Page 10
WFI Test Program
The WFI test assesses aerobic capacity
expressed as VO2max. The results are
calculated and recorded in milliliters (ml) of
oxygen per kilogram (kg) of body weight per
minute (V02 max).
These aerobic assessments are submaximal
and are based on the heart rate response
during graded exercise. Accurate estimation
of maximal heart rate (MHR) is critical to
the submaximal prediction used in these
assessments. A new formula for calculating
maximal heart rate is utilized with these
protocols, it more accurately accounts for
age-related reduction of MHR. Be aware that
the heart rate can be affected by variables such as body temperature, hydration state, anxiety, stress and
medications. In addition to heart rate, body mass (height-to-weight ratio), is also a significant variable in both
prediction equations. The relationship between height and weight is recorded as Body Mass Index (BMI). It
is important to note that BMI is not being used in these aerobic protocols to estimate body composition; but
rather, is used to represent the mass of each participant.
Test Protocol
The test starts at 46 steps/min for 2 minutes, then 53 steps/min for 1 minute (warm-up period). The test time
includes the warm-up time. The test is a series of 1-minute intervals with increasing work loads on each
subsequent minute.
Note: Once the test starts, the user should not maintain a hold or lean on the handrails; this will result in
overestimation of aerobic capacity.
The test is complete when the heart rate exceeds the Target Heart Rate (THR) for 15 seconds. The total Test
Time (TT) begins from the time the user starts on the StepMill, to the point at which the user exceeds their THR.
It does not include the final 15 second qualification period that the heart rate was above the THR.
The qualification period is to verify the user’s heart rate does not exceed the target, and then drop down to the
THR or below for 15 seconds, if it does, then the test continues.
Once the test is completed, the user should cool down for a minimum of 2 minutes at 39 steps/min.
The test is aborted with no results if any of the following occurs:
• The user stops or pauses the workout at any point during the test.
• The key is pressed.
• The THR has not been met after 16 minutes previous
work level.
• The Heart Rate signal is lost.
• The equipment malfunctions.
Target HR = [208 - (0.7* Age)] * 0.85
BMI
(in - Ibs) = 703* Weight (Ibs) / [Height (in)]2
BMI
(cm - kg) = Weight (Kg) / [Height (m)]2
VO2max = 57.774 + (1.757 x time) - (0.904 x BMI)
Fig. 4 General Formulas

Page 11
PROGRAM PROFILES
These profiles are selected in combination with the
Goal Based programs.
Manual Profile
Manual allows you to control the speed of the
machine during the workout, while accurately
calculating exercise statistics based on your weight.
The workout profile in the display window is divided
into 20 equal intervals within the selected workout
time.
Fat Burner Profile
Fat Burner is a 20-interval workout designed with
moderate changes in intensity level designed to
stimulate fat store assimilation for users on a weight
control program. Any changes to speed during
workout will change levels for rest of workout.
The Calorie Burner Profile
Calorie Burner is a 20 interval workout designed for
users wanting to increase their aerobic capacity. The
changes of the intensity in the program are greater
than the changes in the Fat Burner program, and are
designed specifically to tax the cardio respiratory
system.
The profile in the center display indicates relative
intensity. Any changes to speed during workout will
change levels for rest of workout.
The Intervals Profile
Intervals is an interval workout containing 8 alternating
rest intervals with 7 exercise intervals.
An interval cycle consists of a work phase and a rest
phase. You may scale the rest intensity level and the
work intensity level independently - which will be
saved for the remainder of the workout.
Bell-Shaped
Profile The Bell-shaped is a 20 interval workout that
steadily increases intensity for the first half of the
workout, and then decreases over the second half of
the workout. Any changes to Level during the workout
will alter the remaining intervals in the profile by the
same amount.
Build Profile
The Build is a 20 interval workout that steadily
increases intensity over the course of the workout.
Any changes to Level during the workout will alter the
remaining intervals in the profile by the same amount.
Mystery Challenge Profile
The Mystery Challenge is a 20 interval workout with
intensity changes randomly selected and applied
to create a unique workout profile every time. Any
changes to Level during the workout will alter the
remaining intervals in the profile by the same amount.
Steady Profile
The Steady is a 20 interval workout that includes a
warm-up period, then goes to a selected intensity
level and remains there for the duration of the
workout. Any changes to Level during the workout will
alter the remaining intervals in the profile by the same
amount.
OPTIONS DURING WORKOUT MODE
Changing Step Rate/Level
• Use the buttons to adjust the level up and
down
Pausing Workout
• Stop stepping to enter pause mode. Workout
will be suspended and a countdown timer will
begin counting down from 30 seconds. To re-
start workout begin stepping.
End of Workout
• When program goal is reached, or the count-
down timer reaches 0 in pause mode, the
workout ends and the display will show the
total workout statistics and clear.

Page 12
mi
km
Fig. 5 10G Functions
CONSOLE & HANDLEBAR (WHERE APPLICABLE) FUNCTIONS
FQUICK START Key Enables manual operation using a default weight, SPEED and a default time limit.
NOTE: Default time and weight are adjustable through Maintenance Mode.
GSTOP Button
Press the STOP button to enter pause mode. Workout will be suspended and a
countdown timer will begin counting down from 2 minutes. To re-start workout
press the Key. To end the workout push the STOP button again
CFlag Button Displays language options, appears only on home screen
mi
km
DUnit Button Unit toggle, appears only on home screen
OPERATION - OPENHUB
TOUCHSCREEN CONSOLES

Page 13
HLevel Adjustment Allows user to increase/decrease program level
AMain Menu Workout controls, varies by unit. See the Menu Map in the Console Manual for
complete details.
BLUETOOTH DEVICE PAIRING
Bluetooth Device Pairing with Bluetooth Button: Pushing the button puts the console into
discover mode. The console will be available for pairing for up to 60 seconds to pair with a
compatible App. The button will flash while searching for pairing, and the display will show the
unique console code. Once a device is paired with the console, the light will stop flashing and
remain on to indicate the connection. Visit our website for a list of compatible Apps.
mi
km
Bluetooth Menu
To connect with compatible App use
BLE ID: 9999
For more info visit OpenHubConnect.com
Press to Connect Press to Connect
SM20
H.I.I.T.
Landmark
Challenge
Build A
Workout
Quick
Start
RunTV
OverDrive
Fig. 6
Pairing with Apple Watch: OpenHub consoles marked with this icon have the
capability to connect using Near Field Communication (NFC) with Apple Watch (must be
running WatchOS 4.2 or later and have option Detect Gym Equipment set to On in Watch settings for
Workout App.)
Pairing with Samsung Galaxy Watch: OpenHub consoles marked with the Samsung
icon also have the capability to connect with Samsung Galaxy Watch (must be running
software 4.8 or later and have NFC set to On)1.
To connect: Hold the watch near the icon on the console (this is where the NFC reader is located). When
the display and watch detect each other, the Bluetooth button on the display will flash and then turn solid blue,
and watch will ask user to confirm connection with the display. Once connection is confirmed by user, it will
finalize and data will begin to pass between console and watch. It is possible to make this connection either
before the workout begins (recommended), or at any time during an active workout. At the end of workout, the
connection will be terminated.
Note: when Apple Watch is connected to display, the Calories display window will show both Active and Total
Calories per Apple Watch calculations.
1 See support.corehandf.com/Software for version numbers and update instructions

Page 14
147 70%
HR
71.4
KCAL
35
Total Floors
7:08
Total Time
5
Floors/Min
Floor 28
75
SPM
15
0:15
Fig. 7 Screen Elements
During most workouts, users can select from multiple screen view options by tapping the icons at the
bottom of screen. Screens vary by unit, all screens are shown in the Service Manual.
• Simple Key workout stats in a large and easily readable format
• Progress Workout stats plus graphical representation of segments
• Quick Workout stats plus customizable buttons to select incline/speed with single button
press
• Entertainment View video from connected TV feed, or HDMI streaming from personal device
• Apps View (networked product only) Select from a preset list of on-board Apps, including:
YouTube, Facebook, Instagram, Twitter, Reddit,
Pinterest, BBC, NPR (list subject to change at any time)
Fig. 8 Apps View
SCREEN VIEWS

Page 15
Other controls vary by unit:
AFan Button Cycles the fan between three settings: High, Low and Off
CBluetooth Button is grayed out if no device is connected to the console.
DAdjustment
Buttons Allows user to increase/decrease speed, level or incline depending on unit.
EExit/Back This button has the same function as pressing stop button on hot bar, puts
display into the pause screen.
Wallpaper Select to set the screen background.
Display Measurements
Measurements are displayed at top of screen during workout, tapping any of the measurement boxes allows
user to select alternative measures to display and may include the following measurements:
Calories Active/Total calories burned
Note: When connected to Apple Watch only
Fig. 9 Display Measurement Dropdown (10G)
Cal/Hour Current rate of calorie burn
Floors Current floors climbed
Steps Current steps climbed
Time Current total workout time
Watts Current user Watts
METS Current user METS
Floors/Min Current climbing speed
Heart Rate Current HR in beats per minute,
if available

Page 16
WORKOUT SELECTION KEYS AND PROGRAM DEFINITIONS
On the main screen are several choices:
Quick Start Program will request user information to create more accurate calorie burn and heart rate zone
calculations, then begin a fixed time (default length can be adjusted in maintenance mode) manual workout
Existing Workouts
5K Time Trial
Manual
Random Hill
Alpine Pass
Evaluate Fitness (Fitness Test, Firefighter Test, Military Tests – see Service Manual for details)
Build a Workout
Custom Interval Training
Heart Rate Training
Time Goal
Distance Goal
Calorie Goal
Start
TWENTY
Interval-based training has been clinically proven to
provide amazing benefits including: lower blood
pressure, less glucose sensitivity, reduction in
body fat, and of course, better aerobic fitness &
muscular power. 
The StairMaster TWENTY curriculum was created
specifically to allow exercisers of all fitness levels to
reap the benefits of interval training, in a time
efficient manner, with a varied approach to keep it
fun and engaging! 
All workouts total 20 minutes, and migrate through
periods of work and recovery to deliver maximum
fitness benefits with up to 90% less training
volume and up to 67% less time commitment than
traditional interval based programs.
PROGRAM & BENEFITS
OUTSTANDING FITNESS
IN TWENTY MINUTES START
Fig. 10 StarTrac Twenty
Stairmaster 20 A set of 5 different 20 minute High Intensity Interval Training (HIIT) program options,
allowing users of all fitness levels to create a workout that allows them to experience the benefit of adding HIIT
to their workout routine
RunTV A set of first person videos, allows users to choose from a variety of running paths to visually
enhance their workout

Page 17
PROGRAM UPLOAD
Prior to starting a workout, a BlueTooth connected device can be used to upload a program to display on the
console from a compatible app. The upload may contain user info such as age and weight.
1. In an App interface, select the
option to Upload Program
to Display and then select
the program from the app to
upload. Console will switch to
shown page when responding
to the app.
NOTE: if done while a workout
is in progress, the display
will not respond to the app
command.
ST20
H.I.I.T.
Build A
Workout
Existing
Workouts
Quick
Start
RunTV
mi
km
Fig. 11
2. The app will upload to the
console. Pressing the cancel
during this time will return to the
home screen and remove any
uploaded information from the
console.
ST20
H.I.I.T.
Build A
Workout
Existing
Workouts
Quick
Start
RunTV
mi
km
Fig. 12

Page 18
3. Once the program has loaded,
press the green start button to
progress to the setup screen.
NOTE: Console will return to
home screen after 30 seconds
or if cancel is pressed.
4. If program fails to load, an
error screen is displayed for
5 seconds before retuning to
the home screen. Any error
reporting is handled by the
app, please check the app for
additional details.
ST20
H.I.I.T.
Build A
Workout
Existing
Workouts
Quick
Start
RunTV
mi
km
Fig. 13
5. Information from the app may
be adjusted on the setup
screen, or press the GO button
to begin the program.
Fig. 14

Page 19
8G/10G MENU MAP
RunTV
SM20
H.I.I.T.
Landmark
Challenge
Quick
Start
Build A
Workout
Build A Workout
Time
Goal
Calorie
Goal
Custom
Interval
Floor
Goal
Training
Tools
Training Tools
Dynamic HR
Control
WFI CPAT Dutch FF
HR Check
Constant HR
Control
Fig. 15 8G or 10G Menu Map